ET EXPLOIT Possible OpenSMTPD RCE Inbound (CVE-2020-7247)

Query · suricata

flow:established,to_server;
content:"MAIL|20|FROM|3a|<|3b|"; fast_pattern;
Raw source ET EXPLOIT Possible OpenSMTPD RCE Inbound (CVE-2020-7247) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp any any -> [$HOME_NET,$SMTP_SERVERS] any (
    msg:"ET EXPLOIT Possible OpenSMTPD RCE Inbound (CVE-2020-7247)";
    flow:established,to_server;
    content:"MAIL|20|FROM|3a|<|3b|"; fast_pattern;
    reference:url,blog.qualys.com/vulnerabilities-research/2020/01/29/openbsd-opensmtpd-remote-code-execution-vulnerability-cve-2020-7247;
    reference:cve,2020-7247;
    classtype:attempted-admin;
    sid:2031621; rev:1;
    metadata:attack_target SMTP_Server, created_at 2021_02_17, cve CVE_2020_7247, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_17;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.